#name   Format    Be
Be 	2
#
#  Elem	 rho(g/cm^3)	Gas/Solid(1/0)  refl.index    Birks c    

1         1.848		1           0      0 0 0
# 	Z	A  	N
	4	9.01	1
#  ⟨Z/A⟩   I[eV]   a       k      x0    x1     Cbar  delta0
0.44395	63.7  0.8039  2.4339  0.0592  1.6922    2.7847 0.14
